LKSSON 9.] 



COMPOUND LKAVE3. 



65 



ir.l. The separate pieces or little blailes of a conipniind leaf are 

 called leajh-ts. 



IG.'). Compomid leaves are of two principal kind-, namely, the 

 piniiatp and iUo. pulmate ; answering to tin- two modes of veinin;: in 

 reticulated leaves (145- 147), and to tiie two t^orts of lobed or di- 

 vided leaves (158, 159). 



IGG. Pinnate leaves are those in which the leaflets are arranged 

 on the sides of a main leaf-stalk ; as in Fig. 12G-128. They answer 

 to the feat/icr-veincd {\.v. ptnn(ttclij-vcined) simple leaf; as will be 

 seen at once, on comparing Fig. 12G with the figures 118 to 121. 

 The leajlets of the former answer to the loJ)es or dirisions of Jhc 

 latter; and the continuation of the petiole, along which the leaflets 

 are arranged, answers to the midrib of the simple leaf. 



1G7. Three sorts of pinnate leaves are here given. Fig. 12G is 

 pinnate with an odd or end leaflet, as in the Common Locust and 

 tlie A>ii. Fig. 127 is pinnate with a tendril at the end, in place of 

 the odd leaflet, as in the Vetches and the Pea, Fig. 128 is abruptly 

 pinnate, having a pair of leaflets at the end, like the rest of the leaf- 

 lets ; as in the IIoney-Locust. 



IGH. Palmate (also named digitate) leaves are those in wliicli the 

 leaflets are all borne on the very tip of tUe leaf-stalk, as in the 

 Lupine, the Common Clover (Fig. 13G), tT.e Virginia Creeper (Fig. 

 G2), and the Ilorsechestnut and Buckeye (Fig. 129). They answer 

 to the radiate-veined or j^ahnateli/- 

 veined simple leaf; as is seen by 

 comparing Fig. 13G with the figures 

 122 to 125. That is, the Clover- 

 leaf of three leaflets is the same as 

 ;i jjalmately three-ribbed leaf cut 

 into three separate leaflets. And 

 such a simple five-Iobed leaf jxs that 

 of the .Sugar-^Ia[)le, if more cut, so 

 as to sei)arate the parts, would pro- 

 duce a i)almate leaf of five leaflets, 

 like that of the Ilorsechestnut or Duckeye (Fig. 129). 



1C9. Either sorf of compound leaf may have any number of leaf- 

 lets ; though palmate leaves cannot well li:ive a great manv, since 

 they are all crowded together on the end of. the main leaf-stalk. 



FI«. 129 ralmalc leaf of rtvc Icnilcis, of Uie Swocl Uuckryo. 

 G* 



